Deciduous is a designation indicating a plant sheds its leaves at the end of the growing season. The term is used primarily in reference to trees and shrubs, in contrast with those that are evergreen.. It is pronounced dih-SIJ-oo-uhs. To remember what deciduous means, try relating it to the word, decadent..
viscosity. n, pl-ties. 1. the state or property of being viscous. 2. (General Physics) physics. a. the extent to which a fluid resists a tendency to flow. b. Also called: absolute viscosity a measure of this resistance, equal to the tangential stress on a liquid undergoing streamline flow divided by its velocity gradient. It is measured in newton seconds per metre squared.
Science. Viscosity is a measurement of how resistant a fluid is to attempts to move through it. A fluid with a low viscosity is said to be thin, while a high viscosity fluid is said to be thick.. It is easier to move through a low viscosity fluid (like water) than a high viscosity fluid (like honey). Newtonian and Non-Newtonian Fluid Viscosity Most common fluids, called Newtonian fluids (yes, another thing named after that Newton), have a constant viscosity. 1  There is a greater resistance as you increase the force, but it's a constant proportional increase. In short, a Newtonian fluid keeps acting like a fluid, no matter how much force is put into it.